A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6620-01-364-0195
NSN 6685-01-278-8376
NSN 5905-01-208-0265
NSN 6150-01-613-1995
NSN 5905-01-245-8371
NSN 6620-00-286-5721
NSN 5975-00-204-9190
NSN 6105-00-153-7967
NSN 6135-00-127-1683
NSN 5996-00-147-4120
NSN 5895-00-356-6335
NSN 5965-01-230-2351